CIM20AHDY-78

CIM20AHDY-78 is an intermediate-maturing maize hybrid bred for the tropical lowlands of South Asia. This high-yielding, yellow-kernel maize hybrid performs well under heat-plus-drought conditions, and has tolerance to MSR. It demonstrates consistent yield across environments (7.30 t/ha under stress) with good stability across VPD levels and balanced agronomic traits, and only moderate disease response.   General Information   Target Region South Asia   Adaptation/Agroecological zone Tropical Lowland   Type of product Single-cross hybrid   Year first announced 2026         Kernel Characteristics   Kernel color Yellow   Kernel texture Semi-flint             Biotic Stress Performance Grain Yield   Fusarium stalk rot (FSR) (AI) (1-9)* 5.9 Grain yield (rainfed) 4.87 t/ha   Macrophomina Stalk Rot (MSR) (AI) (1-9)* 6.2 Grain yield (high VPD) 3.94 t/ha   *Diseases are scored on a 1-9 scale, where 1 = Highly resistant; 5 = Tolerant; 9 = Highly susceptible. Grain yield (moderate VPD) 5.88 t/ha   Grain yield (low VPD) 6.37 t/ha       Grain yield under on-farm conditions 7.30 ± 0.30 t/ha   Seed Production Characteristics       Female parent yield 4.32 t/ha Agronomic Characteristics   Male parent yield 4.42 t/ha Maturity group Intermediate   Nicking 1.5 days 50% anthesis 60 days       950 GDD   Comments Anthesis-silking interval  1.58 days   Product information is based on data from CIMMYT's 2024 Stage 4 and 2025 Stage 5 Trials under SAHDT. Actual performance will vary depending on a number of agronomic and environmental factors. 

Abbreviations:
AI = artificial infestation/inoculation
DT = Managed drought trial
FSR = Fusarium stalk rot
GDD = growing degree-days (°C)
MSR = Macrophomina Stalk Rot
Opt = optimal environment
RS = random stress trial
VPD = vapor-pressure deficit Ear height  105 cm   Plant height  212 cm   Ear position (ratio) 0.48   Ears per plant 1.03         Further Links   Full Product Announcement
(including trial results summary and site information)